need help in ucc28600

ramanathan muthusamy

Other Parts Discussed in Thread: UCC28600

hi all,

i use ucc28600 ic design calculation (slvc104) to design flyback switching power supply. in this design, the value of resistance value and all xformer ratio values all cames in negative value. is it right?

over 14 years ago

0 Hong Huang over 14 years ago

TI__Guru 74115 points

Negative values of resistance and transformern turns ratio do not look right. Negative values may mean something may need to modify.

0 ramanathan muthusamy over 14 years ago in reply to Hong Huang

Prodigy 130 points

thanks ur feed back. i try to modify those values

0 abdelilah sabhi over 14 years ago in reply to ramanathan muthusamy

Prodigy 10 points

Hi,

If the reflected voltage is negative, try to verify the drain source voltage.

Your Vds(max) limit must be superior than your Vbulk max

Regards

Power management

Power management forum

need help in ucc28600